Set networking-bgpvpn version in upper-constraints.txt
Set networking-bgpvpn version in upper-constraints.txt

As it's not listed in OpenStack requirements, it must be pinned in
Functest.

Change-Id: I4e692ef00d4b6e5dad9899ae279891699c9dcebc
Signed-off-by: Cédric Ollivier <d48310251a4a484d041bc5d09a9ac4d86d20f793@orange.com>

opnfv/functest,opnfv/functest,mywulin/functest,mywulin/functest